Reuser, Finidi George and Alun Armstrong are all available on free transfers, among others.
I'm sure Andy Marshall will leave, and probably Matteo Sereni will secure a long term move back to italy.
Matthew Holland will probably leave if there is a big enough club coming in for him - i see no reason why he couldn't do the business at an of the top 6 premiership clubs.
Basically, we're going to be playing a youth/reserve side next year.